Add short descriptions

include/tbl/vsl_tags.h

@@ -43,20 +43,20 @@
 
 SLTM(Debug, "", "")
 SLTM(Error, "", "")
-SLTM(CLI, "", "")
-SLTM(StatSess, "", "")
-SLTM(ReqEnd, "", "")
-SLTM(SessionOpen, "", "")
-SLTM(SessionClose, "", "")
-SLTM(BackendOpen, "", "")
-SLTM(BackendXID, "", "")
-SLTM(BackendReuse, "", "")
-SLTM(BackendClose, "", "")
+SLTM(CLI, "CLI communication", "CLI communication between master and child process.")
+SLTM(StatSess, "Session statistics", "")
+SLTM(ReqEnd, "Client request end", "")
+SLTM(SessionOpen, "Client connection opened", "")
+SLTM(SessionClose, "Client connection closed", "")
+SLTM(BackendOpen, "Backend connection opened", "")
+SLTM(BackendXID, "The unique ID of the backend transaction", "")
+SLTM(BackendReuse, "Backend connection reused", "")
+SLTM(BackendClose, "Backend connection closed", "")
 SLTM(HttpGarbage, "", "")
-SLTM(Backend, "", "")
-SLTM(Length, "", "")
+SLTM(Backend, "Backend selected", "")
+SLTM(Length, "Size of object body", "")
 
-SLTM(FetchError, "", "")
+SLTM(FetchError, "Error while fetching object", "")
 
 #define SLTH(aa, bb)	SLTM(Req##aa, "", "")
 #include "tbl/vsl_tags_http.h"
@@ -80,28 +80,28 @@ SLTM(FetchError, "", "")
 
 SLTM(LostHeader, "", "")
 
-SLTM(TTL, "", "")
-SLTM(Fetch_Body, "", "")
+SLTM(TTL, "TTL set on object", "")
+SLTM(Fetch_Body, "Body fetched from backend", "")
 SLTM(VCL_acl, "", "")
-SLTM(VCL_call, "", "")
-SLTM(VCL_trace, "", "")
-SLTM(VCL_return, "", "")
-SLTM(VCL_error, "", "")
-SLTM(ReqStart, "", "")
-SLTM(Hit, "", "")
-SLTM(HitPass, "", "")
-SLTM(ExpBan, "", "")
-SLTM(ExpKill, "", "")
+SLTM(VCL_call, "VCL method called", "")
+SLTM(VCL_trace, "VCL trace data", "")
+SLTM(VCL_return, "VCL method return value", "")
+SLTM(VCL_error, "Unused", "")
+SLTM(ReqStart, "Client request start", "")
+SLTM(Hit, "Hit object in cache", "")
+SLTM(HitPass, "Hit for pass object in cache", "")
+SLTM(ExpBan, "Object evicted due to ban", "")
+SLTM(ExpKill, "Object expired", "")
 SLTM(WorkThread, "", "")
 
-SLTM(ESI_xmlerror, "", "")
+SLTM(ESI_xmlerror, "Error while parsing ESI tags", "")
 
-SLTM(Hash, "", "")
+SLTM(Hash, "Value added to hash", "")
 
-SLTM(Backend_health, "", "")
+SLTM(Backend_health, "Backend health check", "")
 
-SLTM(VCL_Debug, "", "")
-SLTM(VCL_Log, "", "")
+SLTM(VCL_Debug, "Unused", "")
+SLTM(VCL_Log, "Log statement from VCL", "")
 SLTM(VCL_Error, "", "")
 
-SLTM(Gzip, "", "")
+SLTM(Gzip, "G(un)zip performed on object", "")